Dump-wagon.



N0.a5z,se1. PATENTED APR.30,1907.

4 D. s. WATSON. DUMP WAGON.

APPLICAT ION FILED JUNE 13', I906.

WITNESSES 9 WE Q l M DAVID S. WATSON, OF OANASTOTA, NEW YORK.

DUMP-WAGON.

Specification of Letters Patent.

lPat-entea April 30, 1907.

Application filed June 13,1906. Serial No. 321,539.

To all whmn it may concern:

Be it known that I, DAVID S. IVATSON, of Canastota, in the county of Madison, in the State of New York, have invented new and useful Improvements in Dump-Wagons, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improve ments in dump wagons in which the dumpbox is provided with laterally swinging bottom doors meeting at substantially the longitudinal center of the box with suitable means, not shown, for controlling the operation of the doors.

In this class of dump-wagons the sides of the box are usually extended forwardly some distance beyond the front end of the box proper to rest upon the front bolster, the intermediate portions of the lower edges of the extensions being cut away, forming a turning clearance for the front wheels. These sides are usually made of wood plank and the cut-outs in the lower edges of the extensions therefore reduce the vertical depth of the forwardly extending sides just at the rear of the front bolster, which tends to weaken the sides at this point. In order to obviate this weakening effect and to reinforce the sides at the cutouts, a band of heavy metal is secured to the side extensions to bridge the space between the front bolster and front end of the box proper, said reinforcing plates following the contour of the cut-out, and are usually bolted or screwed to the wood sides. I have discovered, however, after considerable experience in the manufacture of these wagons that the reinforcing pieces are much more effective in strengthening the extensions of the sides of the box by extending the ends of the reinforcing plates some distance to the rear of the front end of the box proper, and also some distance in front of the front bolster. I have also discovered that it is desirable to hinge the bottom doors in such manner that they will automatically elevate their meeting ends from the ground when swung from their closed to their open positions, and since it is desirable to locate the hinges near the ends of the doors, as well as at the center, I have utilized one of the hinge sections near the front end of the box to partially sustain the adjacent end of the reinforcing plate by securing the fixed hinge section to said plate and extending it upwardly some distance and securing it rigidly to the side of the box just at the rear of the front end, so that the strain transmitted to the rear end of the reinforcing plate isdistributed over a greater area of the side of the box, and across the grain of the wood instead of parallel with it, as would be the case if the rear end of the reinforcing plate were secured directly to the side only of the box.

My objects, therefore, are first, to extend reinforcing plates along the cut-out portion of the side extensions and rearwardly beyond the front end of the box and to secure the fixed hinge sections to the reanvardly proj ecting end of the reinforcing piece, as well as to the side of the box; second, to provide the movable hinge section, which is attached to the door, with an upwardly and inwardly projecting offset sufficient to cause the door to swing upwardly when moving from its closed to its open position.

Other objects and uses will appear in the following description.

In the drawingsl*igure 1 is a side elevation of a portion of the front end of a dumpwagon, showing particularly the front end of the box proper, doors hinged thereto, the forward extensions of the sides of the box, and the supporting bolsters to which the front ends of the extensions are secured. Fig. 2 is a sectional view taken on line 22, Fig. 1.

The dump-box, as 1, is shown as provided with forward extensions -2, the front ends of which rest upon suitable bolsters l and the lower edges of the intervening portions of said extensions 2 between the bolsters a and the front end of the box proper, are formed with cutouts 3.

The box 1, proper, is provided with laterally swinging bottom doors 5 adapted to meet at the longitudinal center of the box and are provided with hinge sections.

-6-- which are pivoted to fixed hinge sections 7-.

A reinforcing plate -S- of comparatively heavy metal, is secured by bolts -9 along the lower edge of the front extension 2 of the sides of the box following the contour of the cut-out 3, and is provided with forward and rearward extensions 10- and 1 1- projecting some distance beyond the cut-out for the purpose of distributing the strains upon the reduced portions of the extensions 2- and central portions of the plate -8 some distance beyond the cut-out.

The strain upon the extensions -2 is particularly heavy immediately at the front end of the box proper, and it hasbeen found that when the reinforcing piece terminates at the front end of the doors, the side of the box is most liable to split or sag-atthe junction, and in order to obviate this, and to distribute the strains farther back upon the sides, I have provided the reinforcing plates 8 with the re arward extensions 1 1, and as a further means of distributing these strains, I

have provided the fixed hinge sections 7- near the front end of the box with a bifurcated lower end, secured by bolts 12 to the extension 1 1, and have extended this hinge section 7 upwardly nearly to the top of the box, and have secured it to the sides by bolts 13. This manner of attaching the extensions 1 1 of the reinforcing plates distributes the strain over a greater area than would be possible with the rear ends of the reinforcing plates terminating at its junction with the front end of the box.

Another important feature of my inven" tion is that the hinge sections 6 extend transversely across the full width and against the underside of the door, and are hinged some distance above the lower edge of the sides of the box, thereby necessitating the formation of said hinge sections 6 with upward extensions 14 and inward offset extremities 15 substantially parallel with the transverse plane of the door and hinged at 16- to and between the arms of the furcated lower end of the fixed hinge section 7.

The pivot 1 6 of the hinge section6 lies within the plane of the outer face of the fixed hinge section 7-, and for this purpose the adjacent portion of the side of the box is recessed at -17 to permit free play of the extension 15-. The object of this inward extension 15 in a plane substantially parallel with the transverse plane of the door is to cause said door to be thrown upwardly when moved to its open position to afford greater clearance between its inner edge and the ground or load which has been dis charged. This is very important in this class of wagons, to relieve the strain on the doors, incidental to passing over a previously discharged load in driving from the dump.

The upward extension 14 of course, affords in itself a certain degree of uplift when the door is swung to its open position, and by offsetting the extreme end, in the manner shown at 15-, this uplift is materially increased to the extent, at least, of the length of the offset, and I have, therefore, made such offset quite pronounced, and brought the hinge-pin 16- directly over the lower edge of the box side 1 thereby causing the hinge to lie close to the side when the doors are closed.

What I claim'is:

In a dump-wagon, a dump-box having swinging bottom doors and forwardly projecting side extensions having their lower portions cut away directly in front of the doors, reinforcing plates secured. to the side extensions and having their rear ends extending some distance beyond the front ends of the doors, a fixed hinge section secured to the side of the box and having its lower end secured to the rearward extension of the reinforcing plate for distributing the strain on the reinforcing plate over a greater area of the side of the box, and a movable hinge section secured to one of the doors and terminating at its outer end in an upward and inward extension pivoted to the fixed hinge section some distance above the lower edge of the side of the box.

In witness whereof I have hereunto set my hand this 11th day of June 1906.

DAVID S. WATSON.

IVitnesses:

E. 0. BROWN, 0. M. WOOD. 

